I suspect that even if someone were to complain--the Abuse Team is too busy for what is reported to them, let alone scanning the database on their own time--they'd say "not a human nipple, not a problem." Maybe I should look for a picture of a cat or chimp nursing and test this.

Ah. Thanks for clarifying. I clicked on your userinfo, and what I saw as the default was the familiar interspecies sex (bee and flower). I'd need to fiddle with my settings to see the animation (I leave it off by default because of my subtly defective neurology).